Buster Posey Twins Born: Giants Catcher Officially A Dad (VIDEO) Early Sunday morning, San Francisco Giants legendary catcher, Buster Posey, officially became a dad. Posey's wife and high school sweetheart, Kristen, delivered Lee Dempsey Posey (5 pounds, 12 ounces) at 1:52am, and Addison Lynn Posey (6 pounds, 3 ounces) two minutes later at 1:54am. (SCROLL DOWN FOR VIDEO)
Compound light microscopes are one of the most familiar of the different types of microscopes as they are most often found in science and biology classrooms. For this reason, simple models are readily available and are inexpensive.
Types of Microscopes. Light Microscope - the models found in most schools, use compound lenses to magnify objects. The lenses bend or refract light to make the object beneath them appear closer. Common magnifications: 40x, 100x, 400x. Stereoscope - this microscope allows for binocular (two eyes) viewing of larger specimens. Scanning Electron Microscope - allow scientists to view a universe too small to be seen with a light microscope. SEMs do not use light waves; they use electrons (negatively charged electrical particles) to magnify objects up to two million times. Transmission Electron Microscope - also uses electrons, but instead of scanning the surface (as with SEM's) electrons are passed through very thin specimens.